The Seconds Pendulum
المؤلف:
GEORGE A. HOADLEY
المصدر:
ESSENTIALS OF PHYSICS
الجزء والصفحة:
p-92
2025-11-05
42
The vibration, which has been defined as the to-and-fro movement of a pendulum over its path, is called a complete vibration in order to distinguish it from the to-or-fro movement, which may be called a half vibration. If t were taken as the time of a half vibration, the formula would become
a half vibration is one second, the pendulum is called a second's pendulum; and by solving the equation we find its length to be 
.
The value of g at Philadelphia is 980.18 cm. Hence the length of the seconds pendulum there is
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